parse_legacy_signed_message

# File actionpack/lib/action_dispatch/middleware/cookies.rb, line 652
        def parse_legacy_signed_message(name, legacy_signed_message)
          if defined?(@legacy_verifier)
            deserialize(name) do |rotate|
              rotate.call

              @legacy_verifier.verified(legacy_signed_message)
            end
          end
        end